/* matematik.biz üyelik — Hesabım paneli ve ☆ Kaydet düğmesi */
.mbuy{--mb:#2F8F7B;--mbk:#22705f;--mz:#f6f9f8;--mc:#d9e3e0;--my:#1c2533;--ms:#5b6672;max-width:860px;margin:0 auto 40px;color:var(--my);font-family:inherit}
.mbuy *{box-sizing:border-box}
.mbuy-yukle{padding:40px 10px;text-align:center;color:var(--ms)}
.mbuy-kart{background:#fff;border:1px solid var(--mc);border-radius:18px;padding:22px;margin:0 0 16px;box-shadow:0 6px 24px rgba(16,24,40,.06)}
.mbuy-gir{max-width:560px;margin:0 auto}
.mbuy h2,.mbuy h3,.mbuy h4{margin:.2em 0 .6em;line-height:1.3}.mbuy h3{font-size:18px}.mbuy h4{font-size:15px;margin-top:1.2em}
.mbuy label{display:block;margin:0 0 14px;font-weight:600;font-size:14px}
.mbuy label small{display:block;font-weight:400;color:var(--ms);margin-top:4px;font-size:12.5px}.mbuy label em{font-weight:400;color:var(--ms)}
.mbuy input[type=text],.mbuy input:not([type]),.mbuy input[type=email],.mbuy input[type=password]{display:block;width:100%;margin-top:6px;padding:12px 14px;font:inherit;font-size:16px;border:1.5px solid var(--mc);border-radius:12px;background:#fff;color:var(--my);min-height:48px}
.mbuy input:focus{outline:none;border-color:var(--mb);box-shadow:0 0 0 3px rgba(47,143,123,.18)}
.mbuy label.mbuy-kutu{display:flex;gap:10px;align-items:flex-start;font-weight:400}.mbuy-kutu input{width:20px;height:20px;margin-top:2px;flex:none;accent-color:var(--mb)}
.mbuy-btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:48px;padding:10px 22px;border:0;border-radius:12px;background:var(--mb);color:#fff!important;font:inherit;font-weight:700;font-size:15px;cursor:pointer;text-decoration:none!important;white-space:nowrap}
.mbuy-btn:hover{background:var(--mbk)}.mbuy-btn:disabled{opacity:.6;cursor:wait}.mbuy form>.mbuy-btn{width:100%}
.mbuy-kirmizi{background:#c62828}.mbuy-kirmizi:hover{background:#9f1f1f}
.mbuy-sek{display:grid;grid-template-columns:1fr 1fr;background:var(--mz);border-radius:14px;padding:4px;margin-bottom:18px}
.mbuy-sek button{min-height:44px;border:0;border-radius:11px;background:transparent;font:inherit;font-weight:700;color:var(--ms);cursor:pointer}.mbuy-sek button[aria-selected=true]{background:#fff;color:var(--my);box-shadow:0 2px 8px rgba(16,24,40,.08)}
.mbuy-soru{font-weight:700;margin:0 0 10px}
.mbuy-roller{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:18px}
.mbuy-rol{display:flex;flex-direction:column;align-items:center;text-align:center;gap:4px;padding:16px 10px;border:2px solid var(--mc);border-radius:16px;background:#fff;font:inherit;cursor:pointer;color:var(--my)}
.mbuy-rol span{font-size:30px;line-height:1}.mbuy-rol b{font-size:16px}.mbuy-rol small{font-size:12px;color:var(--ms);line-height:1.35}
.mbuy-rol.on,.mbuy-rol:hover{border-color:var(--mb);background:#f0f8f6}.mbuy-rol.on{box-shadow:0 0 0 3px rgba(47,143,123,.15)}
.mbuy-alt{text-align:center;margin:14px 0 4px;font-size:14px}.mbuy-bag{border:0;background:none;color:var(--mbk);font:inherit;font-weight:600;cursor:pointer;padding:6px 2px;text-decoration:underline}
.mbuy-kucuk{font-size:13px;color:var(--ms);margin:.4em 0}.mbuy-not{background:#fff8e1;border-radius:10px;padding:10px 12px;font-size:14px}
.mbuy-gizli{position:absolute!important;left:-9999px!important;width:1px;height:1px;opacity:0}
.mbuy-aydin{background:var(--mz);border-radius:12px;padding:4px 14px;margin:-6px 0 14px;font-size:13px;color:var(--ms)}
.mbuy-msj{border-radius:12px;padding:12px 14px;margin:0 0 14px;font-size:14px;background:#eef4ff;color:#1d3f75}.mbuy-msj.mbuy-hata{background:#fdecec;color:#8b1c1c}.mbuy-msj.mbuy-tamam{background:#e7f6ef;color:#14532d}
.mbuy-ic{margin-top:14px;background:var(--mz);box-shadow:none}
.mbuy-ust{display:flex;align-items:center;gap:14px;background:#fff;border:1px solid var(--mc);border-radius:18px;padding:16px 18px;margin-bottom:14px}
.mbuy-avatar{width:52px;height:52px;flex:none;border-radius:50%;display:grid;place-items:center;font-weight:800;font-size:22px;color:#fff;background:var(--mb)}
.mbuy-avatar.mbuy-mb_veli{background:#8d5f80}.mbuy-avatar.mbuy-mb_ogrenci{background:#c86a1d}
.mbuy-kim{flex:1;min-width:0;display:flex;flex-wrap:wrap;align-items:center;gap:4px 10px}.mbuy-kim b{font-size:18px}.mbuy-kim small{flex-basis:100%;color:var(--ms);overflow:hidden;text-overflow:ellipsis}
.mbuy-cip{font-size:12px;font-weight:700;padding:3px 10px;border-radius:20px;background:#e6f2ef;color:var(--mbk)}
.mbuy-cikis{border:1.5px solid var(--mc);background:#fff;border-radius:10px;min-height:42px;padding:6px 14px;font:inherit;font-weight:600;cursor:pointer;color:var(--ms)}
.mbuy-sekmeler{display:flex;gap:6px;overflow-x:auto;margin:0 0 14px;padding-bottom:2px;scrollbar-width:thin}
.mbuy-sekmeler button{flex:none;min-height:44px;padding:8px 16px;border:1.5px solid var(--mc);border-radius:24px;background:#fff;font:inherit;font-weight:600;font-size:14px;cursor:pointer;color:var(--my)}
.mbuy-sekmeler button[aria-selected=true]{background:var(--mb);border-color:var(--mb);color:#fff}
.mbuy-bant{display:flex;align-items:center;gap:14px;justify-content:space-between;background:var(--mz);border-radius:14px;padding:12px 14px;margin-bottom:12px;font-size:14px;color:var(--ms)}
.mbuy-liste{list-style:none;margin:0 0 16px;padding:0;background:#fff;border:1px solid var(--mc);border-radius:16px;overflow:hidden}
.mbuy-liste li{display:flex;align-items:center;gap:10px;padding:14px 16px;border-top:1px solid #eef2f1;margin:0}.mbuy-liste li:first-child{border-top:0}
.mbuy-sat{flex:1;min-width:0;display:flex;flex-direction:column;gap:3px}.mbuy-sat a{color:inherit}.mbuy-sat small{color:var(--ms);font-size:12.5px}
.mbuy code{font-size:12px;background:#eef2f1;padding:1px 6px;border-radius:6px;letter-spacing:.03em}
.mbuy-ist{font-size:13px;color:var(--ms)}.mbuy-ist b{color:var(--my)}
.mbuy-eyl{display:flex;gap:6px;align-items:center;flex-wrap:wrap;justify-content:flex-end}
.mbuy-mini{display:inline-flex;align-items:center;min-height:38px;padding:6px 12px;border:1.5px solid var(--mc);border-radius:10px;background:#fff;font:inherit;font-size:13px;font-weight:600;cursor:pointer;color:var(--my)!important;text-decoration:none!important;white-space:nowrap}
.mbuy-mini.mbuy-ana{background:var(--mb);border-color:var(--mb);color:#fff!important}
.mbuy-x{width:38px;height:38px;border:0;border-radius:10px;background:transparent;font-size:22px;color:#98a2ad;cursor:pointer}.mbuy-x:hover{background:#fdecec;color:#c62828}
.mbuy-puan{font-weight:800;font-size:14px;padding:4px 10px;border-radius:10px;white-space:nowrap}.mbuy-puan.iyi{background:#e7f6ef;color:#166534}.mbuy-puan.orta{background:#fff4dc;color:#8a5a00}.mbuy-puan.dusuk{background:#fdecec;color:#9f1f1f}
.mbuy-baslik{margin:22px 0 10px!important}
.mbuy-bos{text-align:center;padding:30px 16px;border:2px dashed var(--mc);border-radius:16px;color:var(--ms)}
.mbuy-satir{display:flex;gap:8px}.mbuy .mbuy-satir input{margin:0!important;flex:1 1 auto;min-width:0;width:auto;text-transform:uppercase}.mbuy form.mbuy-satir>.mbuy-btn{width:auto;flex:none}
.mbuy-cocuk-ust{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:10px}.mbuy-cocuk-ust b{flex:1;font-size:17px}.mbuy-cocuk-ust .mbuy-avatar{width:40px;height:40px;font-size:17px}
.mbuy-cocuk .mbuy-liste{border:0;border-radius:0;margin:0}.mbuy-cocuk .mbuy-liste li{padding:10px 0}
.mbuy-buyukkod{font-size:40px;font-weight:800;letter-spacing:.18em;text-align:center;background:var(--mz);border-radius:14px;padding:14px;margin:10px 0 4px;color:var(--mbk)}
.mbuy-tehlike{border-color:#f3c9c9}
@media (max-width:640px){.mbuy-kart{padding:18px 16px}.mbuy-roller{grid-template-columns:1fr}.mbuy-rol{flex-direction:row;text-align:left;gap:12px;padding:12px 14px}.mbuy-rol span{font-size:26px}.mbuy-rol small{display:none}
 .mbuy-liste li{flex-wrap:wrap}.mbuy-eyl{width:100%;justify-content:flex-start}.mbuy-bant{flex-direction:column;align-items:stretch}.mbuy-bant .mbuy-btn{width:100%}}
/* ürün kutusunda ☆ Kaydet ve menüde ad */
.mbuy-fav{margin-left:auto;border:1.5px solid rgba(0,0,0,.12);background:#fff;border-radius:20px;padding:4px 12px;min-height:32px;font:inherit;font-size:12.5px;font-weight:700;cursor:pointer;color:#5b4300}
.mbuy-fav[aria-pressed=true]{background:#fff4c2;border-color:#f0c64b}
.mbuy-mi .mbuy-mi-ik{margin-right:4px}.mbuy-mi-on>a{font-weight:700}
.mbuy-mi>a{--mi:#2F8F7B!important}.mbuy-mi .mbuy-ik{background:color-mix(in srgb,#2F8F7B 16%,#fff);color:#2F8F7B}.mbuy-mi-on .mbuy-ik{background:#2F8F7B!important;color:#fff!important}
.mbuy-mi .mbuy-ik b{font:800 13px/1 Poppins,Arial,sans-serif}
.mbuy-google{display:flex;justify-content:center;min-height:44px;margin:4px 0 6px}
.mbuy-ya{display:flex;align-items:center;gap:10px;color:#8a959c;font-size:13px;margin:10px 0 14px}.mbuy-ya::before,.mbuy-ya::after{content:"";flex:1;height:1px;background:#e3e9e7}
.mbuy-mod{position:fixed;inset:0;z-index:100050;background:rgba(15,25,22,.48);display:grid;place-items:center;padding:16px;overflow:auto}
.mbuy-mod-k{position:relative;box-sizing:border-box;width:100%;max-width:420px;margin:auto!important;background:#fff;border-radius:20px;padding:24px 22px 18px;box-shadow:0 24px 60px rgba(0,0,0,.25);margin:auto}
.mbuy-mod-k h2{font-size:21px;margin:0 30px 6px 0}.mbuy-mod-x{position:absolute;top:10px;right:10px;width:40px;height:40px;border:0;border-radius:50%;background:#f1f4f3;font-size:16px;cursor:pointer;color:#5b6672}
html.mbuy-mod-acik{overflow:hidden}
.mbuy-tost{position:fixed;left:50%;top:18px;transform:translateX(-50%);z-index:100060;background:#1f6f5f;color:#fff;padding:12px 18px;border-radius:12px;font:700 14px/1.3 Poppins,system-ui,sans-serif;box-shadow:0 10px 30px rgba(0,0,0,.2)}
.mbuy-bant-uye{display:flex;align-items:center;gap:10px;flex-wrap:wrap;background:#eef7f4;border:1px solid #cfe5de;border-radius:14px;padding:10px 12px;margin:0 0 14px;font:14px/1.4 Poppins,system-ui,sans-serif;color:#24453d}
.mbuy-bant-uye span{flex:1;min-width:200px}.mbuy-bant-uye button{font:inherit;font-weight:700;border:0;border-radius:10px;min-height:40px;padding:6px 14px;background:#2F8F7B;color:#fff;cursor:pointer}.mbuy-bant-uye button.x{background:transparent;color:#7a8a85;padding:6px 8px;min-height:36px}
.mbuy-mm{margin:0 0 12px}.mbuy-mm a{display:flex!important;align-items:center;gap:12px;padding:12px!important;border-radius:14px;background:#fff;border:2px solid #2F8F7B!important;color:#1d2a26!important;text-decoration:none!important}
.mbuy-mm-ik{flex:none;width:40px;height:40px;border-radius:50%;display:grid;place-items:center;background:#2F8F7B;color:#fff;font:800 17px/1 Poppins,sans-serif}.mbuy-mm b{display:block;font-size:15px}.mbuy-mm small{display:block;font-size:12px;color:#5d6b66;font-weight:500}
.mbuy-gyeni h3{margin:.2em 0 .3em}.mbuy-gyeni .mbuy-roller{grid-template-columns:repeat(3,1fr)}.mbuy-gyeni .mbuy-rol{padding:12px 8px}
@media(max-width:640px){.mbuy-gyeni .mbuy-roller{grid-template-columns:1fr}}
.mbuy-kayit-not{display:flex;align-items:center;gap:6px;flex-wrap:wrap;background:#e7f6ef;color:#14532d;border-radius:12px;padding:9px 12px;margin:0 0 12px;font:600 13.5px/1.4 Poppins,system-ui,sans-serif}.mbuy-kayit-not a{color:#14532d;text-decoration:underline}
/* 1.2.3: başlıkta Giriş — telefonda her genişlikte 34 px yuvarlak simge (Ödev hapıyla aynı boy); giriş yapılınca baş harf */
.mobile-header-components li.mbuy-mob{width:auto!important;margin:0 6px!important;padding:0!important;display:flex;align-items:center}
.mobile-header-components li.mbuy-mob a{width:34px!important;height:34px!important;min-width:34px;margin:0!important;padding:0!important;line-height:1!important}
.mbuy-mob a{display:grid!important;place-items:center;width:34px;height:34px;border-radius:50%;background:#fff;border:2px solid #2F8F7B;color:#22705f!important;text-decoration:none!important;box-sizing:border-box;box-shadow:0 1px 4px rgba(16,24,40,.08)}
.mbuy-mob .mbuy-mob-ik{display:grid;place-items:center;width:100%;height:100%;font:800 15px/1 Poppins,Arial,sans-serif}.mbuy-mob .mbuy-mob-ik svg{width:19px;height:19px;fill:none;stroke:#2F8F7B;stroke-width:2.2;stroke-linecap:round}
.mbuy-mob .mbuy-mob-ad{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.mbuy-mob-on a{background:#2F8F7B;border-color:#2F8F7B}.mbuy-mob-on .mbuy-mob-ik{color:#fff}
/* 1.2.3: ana sayfa hesap paneli */
.mbuy-anap{--mb:#2F8F7B;--mbk:#22705f;--mc:#d9e3e0;--my:#1c2533;--ms:#5b6672;display:grid;grid-template-columns:1.1fr 1fr;gap:22px;align-items:start;background:linear-gradient(135deg,#f2faf7,#fff 60%);border:1.5px solid #cfe5de;border-radius:18px;padding:20px 22px;margin:14px 0 20px;font:14.5px/1.45 Poppins,system-ui,sans-serif;color:var(--my);box-shadow:0 6px 20px rgba(16,24,40,.06)}
.mbuy-anap *{box-sizing:border-box}
.mbuy-anap .bas{display:block;font-size:19px;font-weight:800;color:#1d2a26}.mbuy-anap .alt{display:block;color:var(--ms);font-size:13.5px;margin:2px 0 12px}
.mbuy-anap ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}.mbuy-anap li{display:flex;gap:10px;align-items:center;background:#fff;border:1px solid #e1ece8;border-radius:12px;padding:9px 12px;margin:0;font-size:13.5px;color:var(--ms)}
.mbuy-anap li>span:first-child{font-size:22px;line-height:1;flex:none}.mbuy-anap li b{display:block;color:var(--my);font-size:14.5px}
.mbuy-anap-f{background:#fff;border:1px solid var(--mc);border-radius:16px;padding:16px 16px 6px}
.mbuy-anap label{display:block;margin:0 0 10px;font-weight:600;font-size:13.5px}
.mbuy-anap input{display:block;width:100%;margin-top:5px;padding:10px 12px;font:inherit;font-size:16px;border:1.5px solid var(--mc);border-radius:11px;background:#fff;color:var(--my)}
.mbuy-anap input:focus{outline:none;border-color:var(--mb);box-shadow:0 0 0 3px rgba(47,143,123,.18)}
.mbuy-anap .mbuy-btn{width:100%;min-height:44px}.mbuy-anap .mbuy-alt{margin:10px 0 6px}.mbuy-anap .mbuy-ya{margin:8px 0 10px}.mbuy-anap .mbuy-google{margin:0 0 4px}
.mbuy-anap.mbuy-anap-gir{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:12px 14px;background:#fff}
.mbuy-anap .ik{flex:none;width:42px;height:42px;border-radius:50%;display:grid;place-items:center;background:#2F8F7B;color:#fff;font:800 17px/1 Poppins,sans-serif}
.mbuy-anap .m{flex:1;min-width:200px}.mbuy-anap .m b{display:block;font-size:15.5px}.mbuy-anap .m small{color:var(--ms);font-size:13px}
.mbuy-anap .d a{font-weight:700;border-radius:12px;min-height:42px;padding:8px 18px;display:inline-flex;align-items:center;text-decoration:none!important}.mbuy-anap .a1{background:#2F8F7B;color:#fff!important}
@media (max-width:720px){.mbuy-anap{grid-template-columns:1fr;gap:14px;padding:16px 14px}.mbuy-anap ul{grid-template-columns:repeat(3,1fr);gap:6px}.mbuy-anap li{flex-direction:column;text-align:center;gap:4px;padding:8px 6px;font-size:12px;line-height:1.3}.mbuy-anap li b{font-size:13px}}
@media (max-width:380px){.mbuy-anap li{font-size:0}.mbuy-anap li b{font-size:13px}}
.mbuy-bagl{display:grid;gap:10px;margin:0 0 14px}.mbuy-bagl a{display:flex;flex-wrap:wrap;align-items:center;gap:2px 12px;padding:14px 16px;border-radius:14px;background:#2F8F7B;color:#fff!important;text-decoration:none!important}.mbuy-bagl b{font-size:16px}.mbuy-bagl small{flex:1 1 220px;opacity:.92;font-size:13px}.mbuy-bagl span{font-size:20px;font-weight:700}
/* 1.3.0 bildirim zili */
.mobile-header-components li.mbuy-zil{width:auto!important;margin:0 2px!important;padding:0!important;display:flex;align-items:center}
.mbuy-zil-a{position:relative;display:grid;place-items:center;width:34px;height:34px;padding:0!important;border:0!important;border-radius:50%;background:transparent!important;color:#1c2533!important;cursor:pointer;box-shadow:none!important}
.mbuy-zil-a:hover{background:#eef4f2!important}.mbuy-zil-a svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.mbuy-zil-n{position:absolute;top:1px;right:0;min-width:17px;height:17px;padding:0 4px;border-radius:9px;background:#d93025;color:#fff;font:800 10.5px/17px Poppins,Arial,sans-serif;text-align:center;box-sizing:border-box}
.mbuy-mi-zil{display:flex!important;align-items:center}.mbuy-mi-zil .mbuy-zil-a{margin:0 4px}
.mbuy-zil-p{position:fixed;right:10px;z-index:100040;width:min(360px,calc(100vw - 20px));max-height:min(480px,70vh);display:flex;flex-direction:column;background:#fff;border-radius:16px;box-shadow:0 18px 50px rgba(0,0,0,.22);font:14px/1.4 Poppins,system-ui,sans-serif;color:#1c2533;overflow:hidden}
.mbuy-zil-b{display:flex;align-items:center;gap:8px;padding:12px 14px;border-bottom:1px solid #e7eeec}.mbuy-zil-b b{flex:1;font-size:15px}
.mbuy-zil-b button{border:0;background:none;color:#22705f;font:600 12.5px Poppins,sans-serif;cursor:pointer;padding:6px;text-decoration:underline}
.mbuy-zil-l{overflow:auto}.mbuy-zil-i{display:block;padding:10px 14px;border-bottom:1px solid #f0f4f3;color:#1c2533!important;text-decoration:none!important}
.mbuy-zil-i:hover{background:#f6f9f8}.mbuy-zil-i small{display:block;color:#5b6672;font-size:12px;margin-top:2px}
.mbuy-zil-y{background:#f0f8f6}.mbuy-zil-y span{font-weight:600}.mbuy-zil-bos{padding:16px 14px;margin:0;color:#5b6672;font-size:13.5px}
.mbuy-sinir-not{max-width:860px;margin:0 auto 14px;background:#fff4e5;border:1px solid #f3d2b0;border-radius:14px;padding:12px 16px;font:14px/1.45 Poppins,system-ui,sans-serif;color:#5c3410}
/* 1.3.0: temaya karşı kalkan (pencere, zil paneli) */
.mbuy-zil-b button{background:none!important;border:0!important;color:#22705f!important;box-shadow:none!important;text-transform:none!important;letter-spacing:normal!important;font:600 12.5px Poppins,system-ui,sans-serif!important;padding:6px!important}
.mbuy-zil-a:focus{outline:2px solid #2F8F7B!important;outline-offset:2px}
.mbuy-mod-k{font:15px/1.5 Poppins,system-ui,sans-serif!important;color:#1c2533}
.mbuy-mod-k h2{font:800 21px/1.3 Poppins,system-ui,sans-serif!important;margin:0 44px 8px 0!important;color:#1c2533!important}
.mbuy-mod-k p{font-size:15px!important;line-height:1.5!important;margin:0 0 10px!important}.mbuy-mod-k .mbuy-kucuk{font-size:13px!important;color:#5b6672!important}
.mbuy-mod .mbuy-mod-x{width:40px!important;height:40px!important;padding:0!important;border:0!important;border-radius:50%!important;background:#f1f4f3!important;color:#3f4a55!important;box-shadow:none!important;font-size:16px!important;line-height:40px!important}
.mbuy-mod .mbuy-btn{background:#2F8F7B!important;color:#fff!important;border:0!important;text-decoration:none!important}
/* 1.4.0 Testlerim, konu karnesi, hata defteri */
.mbuy-egri{width:100%;height:auto;margin-top:8px;display:block}
.mbuy-egri line{stroke:#e3ebe8;stroke-width:1}.mbuy-egri line.k{stroke:#eef3f1;stroke-dasharray:3 3}
.mbuy-egri polyline{fill:none;stroke:#2F8F7B;stroke-width:3;stroke-linejoin:round;stroke-linecap:round}
.mbuy-egri circle{fill:#2F8F7B}.mbuy-egri text{font:700 11px Poppins,system-ui,sans-serif;fill:#1c2533}
.mbuy-sayac{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin:0 0 14px}
.mbuy-sayac div{background:#fff;border:1px solid #d9e3e0;border-radius:14px;padding:10px;text-align:center}
.mbuy-sayac b{display:block;font-size:22px;font-weight:800;color:#1c2533}.mbuy-sayac small{font-size:12px;color:#5b6672}
.mbuy-kn{margin:10px 0 0;font-size:13.5px}.mbuy-kn-u{display:flex;justify-content:space-between;gap:10px}
.mbuy-kn-c{height:9px;background:#eef3f1;border-radius:99px;margin:4px 0 3px;overflow:hidden}
.mbuy-kn-c i{display:block;height:9px;border-radius:99px;background:#2F8F7B}.mbuy-kn-c i.orta{background:#e8a13c}.mbuy-kn-c i.dusuk{background:#d9534f}
.mbuy-kn small{font-size:12.5px;color:#5b6672}.mbuy-kn a{color:#22705f;font-weight:600}
.mbuy-cipler{display:flex;gap:6px;flex-wrap:wrap;margin-top:10px}
.mbuy-cipler button{min-height:36px!important;padding:0 12px!important;border-radius:99px!important;border:1px solid #d9e3e0!important;background:#fff!important;color:#3f4a55!important;font:600 12.5px Poppins,system-ui,sans-serif!important;cursor:pointer;box-shadow:none!important;text-transform:none!important}
.mbuy-cipler button[aria-pressed="true"]{background:#1c2533!important;color:#fff!important;border-color:#1c2533!important}
.mbuy-df{background:#fff;border:1px solid #d9e3e0;border-radius:16px;padding:14px;margin:0 0 12px;display:flex;flex-direction:column;gap:9px}
.mbuy-df-u{font-size:12.5px;color:#5b6672}.mbuy-df-u b{color:#1c2533}
.mbuy-df-q{background:#f6f9f8;border-radius:12px;padding:12px;font-size:14.5px;line-height:1.55;overflow-x:auto}
.mbuy-df-q img,.mbuy-df-q svg{max-width:100%;height:auto}.mbuy-df-q ol{margin:6px 0 0;padding-left:22px}.mbuy-df-q p{margin:6px 0}
.mbuy-df-bg{border-left:3px solid #2F8F7B;padding-left:10px;margin-bottom:8px}
.mbuy-df-c{display:flex;gap:8px;flex-wrap:wrap;align-items:flex-start;font-size:13px}
.mbuy-df-y,.mbuy-df-d{border-radius:8px;padding:3px 9px;font-weight:700}.mbuy-df-y{background:#fbd5d2;color:#7a1c14}.mbuy-df-d{background:#cdeedd;color:#0f4d2c;display:inline-block;margin-top:6px}
.mbuy-df-c details summary{cursor:pointer;color:#22705f;font-weight:600;padding:3px 0}
.mbuy-df-cz{border-top:1px dashed #cfe5de;margin-top:8px;padding-top:8px;line-height:1.6}
.mbuy-df-e{display:flex;gap:8px;flex-wrap:wrap}.mbuy-df-e>*{flex:1 1 150px;text-align:center}
.mbuy-df-s{display:flex;flex-direction:column;gap:3px;margin-top:4px}
.mbuy-df-e .mbuy-df-cik{min-height:46px!important;border-radius:12px!important;border:1.5px solid #2F8F7B!important;background:#fff!important;color:#22705f!important;font:700 14px Poppins,system-ui,sans-serif!important;text-decoration:none!important;cursor:pointer;box-shadow:none!important;text-transform:none!important;padding:0 12px!important}
.mbuy-df-e .mbuy-btn{display:flex;align-items:center;justify-content:center;min-height:46px}
.mbuy-sat a,.mbuy-sat a b{text-decoration:none!important;color:#1c2533!important;font-size:15px!important;line-height:1.35!important;font-weight:700}
.mbuy-sat a:hover b{color:#22705f!important}
.mbuy-optik-p b{line-height:1.35}.mbuy-optik-p small{line-height:1.4}

/* matematik gösterimi (çalışma kâğıdı motorundan: kesir, devir çizgisi, açı, uzun bölme) */
/* matematik gösterimi */
.mbuy-df-q .fr { display: inline-flex; flex-direction: column; vertical-align: middle; text-align: center; margin: 0 2px; line-height: 1.08; font-size: .92em; }
.mbuy-df-q .fr .nu { border-bottom: 1.3px solid currentColor; padding: 0 2px; }
.mbuy-df-q .fr .de { padding: 0 2px; }
.mbuy-df-q .mn { margin-right: 1px; }
.mbuy-df-q .ovl { text-decoration: overline; text-decoration-thickness: 1.3px; }
.mbuy-df-q .ang { position: relative; display: inline-block; padding-top: 3px; }
.mbuy-df-q .ang::before { content: ""; position: absolute; left: 12%; right: 12%; top: -2px; height: 6px; background: currentColor;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 10' preserveAspectRatio='none'%3E%3Cpolyline points='1,9.5 50,1 99,9.5' fill='none' stroke='black' stroke-width='2.2' vector-effect='non-scaling-stroke'/%3E%3C/svg%3E") center/100% 100% no-repeat; }

/* uzun bölme şeması — cekirdek.bolme(pay, payda, adim): solda işlem, sağda bölen/bölüm; eklenen sıfır kırmızı */
.mbuy-df-q .bs { display:inline-flex; align-items:flex-start; font-weight:600; line-height:1.28; font-size:10pt; }
.mbuy-df-q .bs .r { display:flex; } .mbuy-df-q .bs .c { width:.68em; text-align:center; } .mbuy-df-q .bs .c.u { border-bottom:1.3px solid currentColor; }
.mbuy-df-q .bs .z { color:#D32F2F; }
.mbuy-df-q .bs .br { border-left:1.3px solid currentColor; margin-left:.45em; } .mbuy-df-q .bs .bolen { padding:0 .55em; border-bottom:1.3px solid currentColor; }
.mbuy-df-q .bs .bolum { padding:0 .45em; white-space:nowrap; }